Three-dimensional multi-phase-field simulation of eutectoid alloy based on OpenCL parallel

Seeking high-performance computing methods to solve the problem of a large amount calculation, low calculation efficiency, and small simulation scale on traditional single central processing unit (CPU) platform is great value study micro-structure. In this study, based three-dimensional multi-phase-field model KKSO coupling phase-field solute field, open language (OpenCL) + graphics (GPU) heterogeneous parallel technology used simulate eutectoid growth Fe-C alloy end process pearlite under pure diffusion. The effects initial supercooling different diffusion coefficients morphology lamellar were investigated. results show that ferrite cementite are perpendicular front solid-solid interface coupled coordinated grow, there no leading phase degree 20 K. With continuous increase (19 K–22 K), changes layer as follows: stops growing → slice amplitude increases regular symmetric oblique merge. coefficient from 3×10−13 m2·s−1 15×10−13 m2·s−1, rate microstructure linearly, obvious change in frontal appearance pearlite.